[INFO] fetching crate cargo-todo 0.2.1...
[INFO] checking cargo-todo-0.2.1 against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] extracting crate cargo-todo 0.2.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate cargo-todo 0.2.1
[INFO] finished tweaking crates.io crate cargo-todo 0.2.1
[INFO] tweaked toml for crates.io crate cargo-todo 0.2.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cargo-todo 0.2.1 on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate cargo-todo 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07eb833989865715daac37ffc1092551a4c99c5f30743f63aeccdd08d744c5e5
[INFO] running `Command { std: "docker" "start" "-a" "07eb833989865715daac37ffc1092551a4c99c5f30743f63aeccdd08d744c5e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07eb833989865715daac37ffc1092551a4c99c5f30743f63aeccdd08d744c5e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07eb833989865715daac37ffc1092551a4c99c5f30743f63aeccdd08d744c5e5", kill_on_drop: false }`
[INFO] [stdout] 07eb833989865715daac37ffc1092551a4c99c5f30743f63aeccdd08d744c5e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] baca6c64d457d6f9b077a2597796c79d140a97c8c736b827f10f392e5cde5f19
[INFO] running `Command { std: "docker" "start" "-a" "baca6c64d457d6f9b077a2597796c79d140a97c8c736b827f10f392e5cde5f19", kill_on_drop: false }`
[INFO] [stderr]     Checking string_format v0.1.0
[INFO] [stderr]     Checking string-parser v0.1.5
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking cargo-todo v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/main.rs:249:25
[INFO] [stdout]     |
[INFO] [stdout] 249 |                         &new_tokens.push(i.clone());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 249 |                         let _ = &new_tokens.push(i.clone());
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/main.rs:267:25
[INFO] [stdout]     |
[INFO] [stdout] 267 |                         &new_tokens.push(i.clone());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 267 |                         let _ = &new_tokens.push(i.clone());
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/main.rs:281:25
[INFO] [stdout]     |
[INFO] [stdout] 281 |                         &new_tokens.push(i.clone());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 281 |                         let _ = &new_tokens.push(i.clone());
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/main.rs:299:25
[INFO] [stdout]     |
[INFO] [stdout] 299 |                         &new_tokens.push(i.clone());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 299 |                         let _ = &new_tokens.push(i.clone());
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/main.rs:249:25
[INFO] [stdout]     |
[INFO] [stdout] 249 |                         &new_tokens.push(i.clone());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 249 |                         let _ = &new_tokens.push(i.clone());
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/main.rs:267:25
[INFO] [stdout]     |
[INFO] [stdout] 267 |                         &new_tokens.push(i.clone());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 267 |                         let _ = &new_tokens.push(i.clone());
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/main.rs:281:25
[INFO] [stdout]     |
[INFO] [stdout] 281 |                         &new_tokens.push(i.clone());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 281 |                         let _ = &new_tokens.push(i.clone());
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/main.rs:299:25
[INFO] [stdout]     |
[INFO] [stdout] 299 |                         &new_tokens.push(i.clone());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 299 |                         let _ = &new_tokens.push(i.clone());
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.30s
[INFO] running `Command { std: "docker" "inspect" "baca6c64d457d6f9b077a2597796c79d140a97c8c736b827f10f392e5cde5f19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baca6c64d457d6f9b077a2597796c79d140a97c8c736b827f10f392e5cde5f19", kill_on_drop: false }`
[INFO] [stdout] baca6c64d457d6f9b077a2597796c79d140a97c8c736b827f10f392e5cde5f19